using System;
using System.Diagnostics;

namespace WenSkin.Json.Serialization
{
	/// <summary>
	/// Represents a trace writer.
	/// </summary>
	public interface ITraceWriter
	{
		/// <summary>
		/// Gets the <see cref="T:System.Diagnostics.TraceLevel" /> that will be used to filter the trace messages passed to the writer.
		/// For example a filter level of <code>Info</code> will exclude <code>Verbose</code> messages and include <code>Info</code>,
		/// <code>Warning</code> and <code>Error</code> messages.
		/// </summary>
		/// <value>The <see cref="T:System.Diagnostics.TraceLevel" /> that will be used to filter the trace messages passed to the writer.</value>
		TraceLevel LevelFilter { get; }

		/// <summary>
		/// Writes the specified trace level, message and optional exception.
		/// </summary>
		/// <param name="level">The <see cref="T:System.Diagnostics.TraceLevel" /> at which to write this trace.</param>
		/// <param name="message">The trace message.</param>
		/// <param name="ex">The trace exception. This parameter is optional.</param>
		void Trace(TraceLevel level, string message, Exception ex);
	}
}
